* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body ,html {
    width: 100%;
    height: 100%;
    background: url('/assets/images/login_bg.jpg') no-repeat center center/cover;
}
.header {
    padding-top: 20px;
}
/* 定位到中间 */
.login_and_register {
    position: absolute;
    top:50%;
    left: 50%;
    width: 400px;
    height: 310px;
    background-color: #fff;
    transform: translate(-50%,-50%);
}
.title_box {
    width: 400px;
    height: 60px;
    background: url('/assets/images/login_title.png') no-repeat center center;
}
.layui-form {
    padding: 0 30px;
}
.layui-form a {
    display: block;
    font-size: 12px;
    margin-top: 15px;
}
.layui-form-item {
    position: relative;
}
.layui-icon {
    position: absolute;
    top: 10px;
    left: 10px;
}
.layui-input {
    padding-left: 30px;
}